Abstract: The billet rolling mill comprises two rolls for shaping a blank, each shaping roll being provided with at least one rolling tool and being rotated about an axis of rotation by a drive motor, and a manipulator subassembly for moving the blank with respect to the shaping rolls. The manipulator subassembly comprises a clamp gripping the blank and a carriage moving the clamp at least along a direction of rolling of the blank. The manipulator subassembly comprises a linear motor moving the carriage along the direction of rolling. The direction of rolling is perpendicular to the axis of rotation of the rolling tool. The linear motor is configured for accelerating the blank and selectively exerting on the blank, either a tensile force, to extract the blank from a gap defined between the rolling tools, or a braking force, to limit a speed of ejection of the blank.

Abstract: A circular rolling mill includes a main chassis, a radial stand and at least one axial stand. The radial stand includes a roller and a mandrel. The axial stand includes an auxiliary chassis and tapered rollers. The mandrel is supported by an upper mandrel holder and selectively engaged with a lower mandrel holder. Each mandrel holder is integral in translation along a longitudinal axis of the main chassis, with at least one drive bar parallel to the longitudinal axis. The movement of the mandrel holders is controlled by a movement system located on the same side of the shaping roller as the mandrel. The auxiliary chassis slides along its longitudinal axis on the drive bars, which pass all the way through it. A mechanism moves the auxiliary chassis relative to the drive bars in translation parallel to the longitudinal axis.

Abstract: The billet rolling mill comprises two rolls for shaping a blank, each shaping roll being provided with at least one rolling tool and being rotated about an axis of rotation by a drive motor, and a manipulator subassembly for moving the blank with respect to the shaping rolls. The manipulator subassembly comprises a clamp gripping the blank and a carriage moving the clamp at least along a direction of rolling of the blank. The manipulator subassembly comprises a linear motor moving the carriage along the direction of rolling. The direction of rolling is perpendicular to the axis of rotation of the rolling tool. The linear motor is configured for accelerating the blank and selectively exerting on the blank, either a tensile force, to extract the blank from a gap defined between the rolling tools, or a braking force, to limit a speed of ejection of the blank.

Abstract: This circular rolling mill (1), used for shaping annular workpieces (100), comprises a pair of rollers, an inner one (12) and an outer one (10), capable of working (F1+F2) the radial inner (102) and outer (101) faces of a workpiece, and a pair of conical rollers, an upper one (22) and a lower one (20), capable of working (F4+F5) the front faces (103, 104) of the workpiece, and also means (66) for moving some of these rollers (22) with respect to a frame (41) of the rolling mill (1). The means for moving at least one of the rollers (22) comprise at least one pinion (54, 55) and at least one rack (26, 28) which is secured to a member for the movement (F3) of the roller. This pinion (54, 55) is rotated by the output shaft of an electrically operated geared motor (66) mounted on a support (72) which is articulated with respect to the frame about the axis (X56) parallel to the axis of rotation of the pinion.

Abstract: This circular rolling mill (1), used for shaping annular workpieces (100), comprises a pair of rollers, an inner one (12) and an outer one (10), capable of working (F1+F2) the radial inner (102) and outer (101) faces of a workpiece, and a pair of conical rollers, an upper one (22) and a lower one (20), capable of working (F4+F5) the front faces (103, 104) of the workpiece, and also means (66) for moving some of these rollers (22) with respect to a frame (41) of the rolling mill (1). The means for moving at least one of the rollers (22) comprise at least one pinion (54, 55) and at least one rack (26, 28) which is secured to a member for the movement (F3) of the roller. This pinion (54, 55) is rotated by the output shaft of an electrically operated geared motor (66) mounted on a support (72) which is articulated with respect to the frame about the axis (X56) parallel to the axis of rotation of the pinion.